Description:

The NTE1786 is an integrated circuit in a 24–Lead DIP type package that provides closed–loop digital tuning of TV receivers, with or without AFC, as required. This device also controls up to 4 analog functions, 4 general purpose I/O ports and 4 high–current outputs for tuner band selection.

Features:

• Combined Analog and Digital Circuitry Minimizes the Number of Additional Interfacing Components Required

• Frequency Measurement with Resolution of 50kHz

• Selectable Prescaler Divisor of 64 or 256

• 32V Tuning Voltage Amplifier

• 4 High–Current Outputs for Direct Band Selection

• 4 Static Digital–to–Analog Convertors (DACs) for Control of Analog Functions

• 4 General Purpose Input/Output (I/O) Ports

• Tuning with Control of Speed and Direction

• Tuning with or without AFC

• Single–Pin, 4MHz On–Chip Oscillator

• I2C Bus Slave Transceiver

Applications:

• TV Receivers

• Satellite Receivers

• CATV Converters